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Summary of Significant Accounting Policies and Related Data - Goodwill and Indefinite-Life Intangible Assets (Details)
3 Months Ended 12 Months Ended
Oct. 31, 2025
USD ($)
Aug. 01, 2025
USD ($)
Oct. 31, 2025
USD ($)
segment
reportingUnit
Oct. 31, 2024
USD ($)
Oct. 31, 2023
USD ($)
Accounting Policies [Abstract]          
Asset impairment charges   $ 81,100,000 $ 81,100,000 $ 0 $ 151,300,000
Deferred tax assets, goodwill and intangible assets   $ 19,700,000      
Number of operating segments | segment     8    
Number of reporting units containing goodwill | reportingUnit     7    
Goodwill, impairment loss $ 0        
Non-cash impairment charges2 $ 0